proxysql 学习一 proxysql docker 运行试用

proxysql 是一个比较强大的mysql proxy 服务，支持动态mysql 实例调整，查询重写，查询cache，监控，数据镜像，读写分离
以及ha，最近已经发布了2.0 ，很值得试用下

环境准备

• docker-compose 文件

version: "3"

services:

  mysql:

    image: mysql:5.7.16

    ports:

      - 3306:3306

    command: --character-set-server=utf8mb4 --collation-server=utf8mb4_unicode_ci

    environment:

      MYSQL_ROOT_PASSWORD: dalongrong

      MYSQL_DATABASE: test

      MYSQL_USER: test

      MYSQL_PASSWORD: test

      TZ: Asia/Shanghai

  proxysql:

    image: proxysql/proxysql:2.0.5

    volumes: 

    - "./proxysql.cnf:/etc/proxysql.cnf"

    ports:

    - "6033:6033"

    - "6032:6032"

• proxysql.cnf 文件

  主要是关于proxysql 的一些运行是配置，同时我们也可以配置mysql server 实例,以下为了简单，直接使用配置文件的方式

datadir="/var/lib/proxysql"

​

admin_variables=

{

    admin_credentials="admin:admin;radmin:radmin"

    mysql_ifaces="0.0.0.0:6032"

}

​

mysql_variables=

{

    threads=4

    max_connections=2048

    default_query_delay=0

    default_query_timeout=36000000

    have_compress=true

    poll_timeout=2000

    interfaces="0.0.0.0:6033"

    default_schema="information_schema"

    stacksize=1048576

    server_version="5.5.30"

    connect_timeout_server=3000

    monitor_username="root"

    monitor_password="dalongrong"

    monitor_history=600000

    monitor_connect_interval=60000

    monitor_ping_interval=10000

    monitor_read_only_interval=1500

    monitor_read_only_timeout=500

    ping_interval_server_msec=120000

    ping_timeout_server=500

    commands_stats=true

    sessions_sort=true

    connect_retries_on_failure=10

}

​

 mysql_servers =

 (

  {

    address="mysql"

    port=3306

    hostgroup=0

    max_connections=200

  }

 )

​

mysql_users:

 (

  {

    username = "root"

    password = "dalongrong"

    default_hostgroup = 0

    max_connections=1000

    default_schema="information_schema"

    active = 1

  }

 )

启动&&简单操作

• 启动

docker-compose up -d

• 管理连接接口

mysql -h127.0.0.1 -P6032 -uradmin -pradmin --prompt "ProxySQL Admin>"

• 简单操作

show databases;

效果

ProxySQL Admin>show databases;

+-----+---------------+-------------------------------------+

| seq | name          | file                                |

+-----+---------------+-------------------------------------+

| 0   | main          |                                     |

| 2   | disk          | /var/lib/proxysql/proxysql.db       |

| 3   | stats         |                                     |

| 4   | monitor       |                                     |

| 5   | stats_history | /var/lib/proxysql/proxysql_stats.db |

+-----+---------------+-------------------------------------+

5 rows in set (0.01 sec)

查询mysql server

select * from main.mysql_servers\G;

效果

select * from main.mysql_servers\G;

*************************** 1. row ***************************

       hostgroup_id: 0

           hostname: mysql

               port: 3306

          gtid_port: 0

             status: ONLINE

             weight: 1

        compression: 0

    max_connections: 200

max_replication_lag: 0

            use_ssl: 0

     max_latency_ms: 0

            comment: 

1 row in set (0.00 sec)

​

ERROR: 

No query specified

查询运行时mysql server

select * from runtime_mysql_servers\G;

*************************** 1. row ***************************

       hostgroup_id: 0

           hostname: mysql

               port: 3306

          gtid_port: 0

             status: ONLINE

             weight: 1

        compression: 0

    max_connections: 200

max_replication_lag: 0

            use_ssl: 0

     max_latency_ms: 0

            comment: 

1 row in set (0.01 sec)

• 应用连接
  应用连接的端口为6033
  连接方式：

mysql -h127.0.0.1 -P6033 -uroot -pdalongrong

简单查询

 select * from rongdemo.usersinfo;

+----------+--------+

| username | userid |

+----------+--------+

| dalong | 1 |

+----------+--------+

1 row in set (0.00 sec)

 

说明

proxysql 功能是比较强大的，性能也很不错，对于同时提供了管理以及连接地址，暴露为标准的mysql 协议，对于配置的生效
并不是添加mysql server 实例到main.mysql_servers 就可以了，需要到runtime ,同时还需要配置进行持久化，相关命令有

LOAD MYSQL USERS TO RUNTIME;

SAVE MYSQL USERS TO DISK;

LOAD MYSQL SERVERS TO RUNTIME;

SAVE MYSQL SERVERS TO DISK;

LOAD MYSQL QUERY RULES TO RUNTIME;

SAVE MYSQL QUERY RULES TO DISK;

LOAD MYSQL VARIABLES TO RUNTIME;

SAVE MYSQL VARIABLES TO DISK;

LOAD ADMIN VARIABLES TO RUNTIME;

SAVE ADMIN VARIABLES TO DISK;

对于proxysql，社区也提供了好多方便的监控工具，比如exporter ，方便与promethues 集成
对应官方的dockerfile 文件

 

FROM debian:stretch

MAINTAINER Nikolaos Vyzas <nick@proxysql.com>

RUN apt-get update && apt-get install -y wget lsb-release gnupg apt-transport-https ca-certificates && wget -O - 'https://repo.proxysql.com/ProxySQL/repo_pub_key' | apt-key add - && echo deb https://repo.proxysql.com/ProxySQL/proxysql-2.0.x/$(lsb_release -sc)/ ./ | tee /etc/apt/sources.list.d/proxysql.list && apt-get update && apt-get install proxysql=2.0.5 && rm -rf /var/lib/apt/lists/*

ENTRYPOINT ["proxysql", "-f", "-D", "/var/lib/proxysql"]

参考资料

https://github.com/sysown/proxysql/wiki/Configuring-ProxySQL
https://github.com/sysown/proxysql
https://github.com/rongfengliang/proxysql-docker-compose
https://hub.docker.com/r/proxysql/proxysql